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Math Final: Unknown Terms
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Gravity
Terms in this set (34)
segment addition postulate
If C is between A and B, then AC + BC = AB.
midpoint formula
distance formula
reflexive, symmetric, transitive
3 properties that are both properties of equality and properties of congruence
perpendicular transversal theorem
In a plane, if a transversal is perpendicular to one of two parallel lines, then it is perpendicular to the other line.
median
a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side
x, x, x root 2
sides of a 45-45-90 triangle
45-45-90
special right triangle that is isosceles
x, x root 3, 2x
sides of a 30-60-90 triangle
30-60-90
special right triangle that is half of an equilateral triangle
parallelogram
Opposite angles are congruent
Opposite sides are congruent
Consecutive angles are supplementary
Diagonals bisect each other
rectangle
Opposite angles are congruent
Opposite sides are congruent
Consecutive angles are supplementary
Diagonals bisect each other
Diagonals are congruent
rhombus
Opposite angles are congruent
Opposite sides are congruent
Consecutive angles are supplementary
Diagonals bisect each other
Diagonals are perpendicular
Diagonals bisect a pair of opposite angles
One pair of consecutive sides are congruent
kite
a quadrilateral with exactly two pairs of congruent consecutive sides
kite
Diagonals are perpendicular
Exactly one pair of opposite angles are congruent
isosceles trapezoid
a trapezoid whose legs are congruent
isosceles trapezoid
Each pair of base angles are congruent
Diagonals are congruent
trapezoid midsegment theorem
The midsegment of a trapezoid is parallel to each base and its length is ½ the sum of the lengths of the bases.
quadrilateral midpoint theorem
The midpoints of any quadrilateral form a parallelogram.
triangle proportionality theorem
If a line parallel to a side of a triangle intersects the other two sides, then it divides those two sides proportionally.
two transversal theorem
If three or more parallel lines intersect two transversals, then they divide the transversals proportionally.
triangle angle bisector theorem
An angle bisector of a triangle divides the opposite side into two segments whose lengths are proportional to the lengths of the other two sides.
secant
a line that intersects a circle at two points
tangent
a line in the same plane as a circle that intersects it at exactly one point
chord
a segment whose endpoints lie on a circle
chord-chord product theorem
If two chords intersect in the interior of a circle, then the products of the lengths of the segments of the chords are equal.
secant-secant product theorem
If two secants intersect in the exterior of a circle, then the product of the lengths of one secant segment and its external segment equals the product of the lengths of the other secant segment and its external segment.
secant-tangent product theorem
If a secant and a tangent intersect in the exterior of a circle, then the product of the length of the secant segment and its external segment equals the length of the tangent segment, squared.
translation
The composition of two reflections across two parallel lines is equivalent to a single ___________
rotation
The composition of two reflections across two intersecting lines is equivalent to a single ________
IQR
Q3-Q1
mean
best measure of central tendency for a graph with normal distribution
median
best measure of central tendency for a graph with skewed distribution
mode
best measure of central tendency for a graph of categorical data
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